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> 下列等式成立的是()A.(-3)0=0B.(-12)-2=4C.(-a-2)-3=a6D.0.000618=6.18×10-3-数学
下列等式成立的是()A.(-3)0=0B.(-12)-2=4C.(-a-2)-3=a6D.0.000618=6.18×10-3-数学
题目简介
下列等式成立的是()A.(-3)0=0B.(-12)-2=4C.(-a-2)-3=a6D.0.000618=6.18×10-3-数学
题目详情
下列等式成立的是( )
A.(-3)
0
=0
B.
(-
1
2
)
-2
=4
C.(-a
-2
)
-3
=a
6
D.0.000618=6.18×10
-3
题型:单选题
难度:中档
来源:不详
答案
A、应为(-3)0=1,故本选项错误;
B、应为
(-
class="stub"1
2
)
-2
=4;故本选项正确;
C、应为(-a-2)-3=-a6,故本选项错误;
D、应为0.000618=6.18×10-4,故本选项错误;
故选B.
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题目简介
下列等式成立的是()A.(-3)0=0B.(-12)-2=4C.(-a-2)-3=a6D.0.000618=6.18×10-3-数学
题目详情
答案
B、应为(-
C、应为(-a-2)-3=-a6,故本选项错误;
D、应为0.000618=6.18×10-4,故本选项错误;
故选B.